shake, rattle and Roll
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New User
Joined: Dec 2001
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shake, rattle and Roll
I have a 1979 F250 with a 460 and c-6 auto. The thing shakes when i accelerate, but then evens out once i reach 35-45 mph or begin to coast. I have checked the front end and replaced any bad parts. I have also replaced the carrier bearing. The engine mounts don't look bad and the engine doesn't seem to have excessive movement. Could bad shocks be the problem? Could the tires be that out of ballance to shake the vehicle that bad? Any info would be great. 
New User
Joined: Jan 2008
Posts: 0
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shake, rattle and Roll
You're sure it's NOT engine related ?
Mechanically speaking >
Shocks
Tires
Wheels
Driveshaft
Tie-Rods
Cause shaking
Dennis
Oh....Please Don't Ask Me Any Tough Questions As:
"I'm Saving Up MY Memory For When I Develop Alzheimer's"
78 F-150 429CJ C6 ,Silver w/Explorer Pkge
641/2 Mustang,Pre-World's Fair Car #8092
64 Fairlane S/C waiting for a 390-4spd.
68-Mustang.Sunlit Gold 80,000 miles
Mechanically speaking >
Shocks
Tires
Wheels
Driveshaft
Tie-Rods
Cause shaking
Dennis
Oh....Please Don't Ask Me Any Tough Questions As:
"I'm Saving Up MY Memory For When I Develop Alzheimer's"
78 F-150 429CJ C6 ,Silver w/Explorer Pkge
641/2 Mustang,Pre-World's Fair Car #8092
64 Fairlane S/C waiting for a 390-4spd.
68-Mustang.Sunlit Gold 80,000 miles
Posting Guru
Joined: Jul 2001
Posts: 1,613
Likes: 2
From: Gainesville, FL
shake, rattle and Roll
Big,
Give me something to work with.
1. 2x4 or 4x4?
2. Does steering wheel shake in your hand with vibe? (front tires/steering problem/front rotors need turning)Bad rotors usually can be felt through pedal during braking.
3. Does the vibe come and go at constant speed?(mutiple tires out of balance)
4. Does the vibe come and go with respect to RPM. i.e. 10 mph (1st gear) 32MPH (2nd gear) 47MPH (3rd gear) if it does, then its your motor.
5. Does it only do it from starting out at a stop light and eventually go away as you get up to speed? (U-joints in rear driveshaft) This is usually accompanied by some grinding/clicking noise, but not always.
Hope this helps more than just Big.
Good Luck, Have Fun,
KingFisher
Give me something to work with.
1. 2x4 or 4x4?
2. Does steering wheel shake in your hand with vibe? (front tires/steering problem/front rotors need turning)Bad rotors usually can be felt through pedal during braking.
3. Does the vibe come and go at constant speed?(mutiple tires out of balance)
4. Does the vibe come and go with respect to RPM. i.e. 10 mph (1st gear) 32MPH (2nd gear) 47MPH (3rd gear) if it does, then its your motor.
5. Does it only do it from starting out at a stop light and eventually go away as you get up to speed? (U-joints in rear driveshaft) This is usually accompanied by some grinding/clicking noise, but not always.
Hope this helps more than just Big.
Good Luck, Have Fun,
KingFisher
New User
Joined: Feb 2001
Posts: 4
Likes: 0
shake, rattle and Roll
I had an old Dodge Powerwagon that used to vibrate at about 50-55,then smooth out around 60.Couldn't figure out what the problem was.Turned out the front wheel bearings had a little slack in them. Hope this helps,just a thought.
